The ELK stack stands for Elasticsearch, Logstash and Kibana. These three pieces of software are very useful since each brings a powerful capability that in combination is just great to use. Elasticsearch is a search and analytics engine. Logstash can process data from multiple sources. Kibana allows to visualize data in a graphic manner. These […]
How to install the ELK stack on CentOS 8
How to mitigate/solve the MDS vulnerabilities of Intel processors in FreeBSD
It had to happen again. Anyone betting on new hardware vulnerabilities on Intel processors would have won. This time these are called the MDS vulnerabilities, which stands for Microarchitectural Data Sampling. The trouble is the ones who would have really made big money would have been those stating the new CPUs were on the same […]
Why FreeBSD
In the following lines you will find a brief but sort of complete explanation about what is FreeBSD and why FreeBSD might be of your interest. If you are already a Mac or Linux user this could be more relevant for you than you would imagine. Enjoy. FreeBSD is an operating system, a unix-like operating […]
How to mitigate Spectre and Meltdown on a Lenovo T430s with FreeBSD
As recently announced in a previous article I wanted to write a couple of guides on how to mitigate Spectre and Meltdown vulnerabilities in GNU/Linux and UNIX environments. It is always a good and I hope a standard practice to have your systems patched and if they aren’t for whatever the reason (that legacy thing […]
How to install the Clamav antivirus on CentOS 8
Clamav is a free antivirus nowadays owned by Cisco and developed under the umbrella of the Talos-Intelligence group. Don’t be fooled by the word free, this is serious business. It supports a wide variety of operating systems from Windows to Linux-based ones as well as FreeBSD. Many companies are using other types of antivirus software […]
Nessus vulnerability scanner
Nessus is a very well known vulnerability scanner used by many large and small companies to assess their systems and correct the issues found in them. Cybersecurity teams and specially auditors, make heavy use of tools like this in order to follow up the state of infrastructure and environments. Having a tool like this saves […]
How to compile cloudflared in FreeBSD 13/14
I happen to self-host my websites using Cloudflare’s services (article 1, article 2). Since the FreeBSD port seems to be delaying its releases and Cloudflare’s policy on maintaining versions only considers 1 year old code, in an act of prevention I have learnt, and I am publishing, how to compile cloudflared in FreeBSD. Note: At […]
How to update FreeBSD with freebsd-update
Anytime you set a clean fresh FreeBSD install or just any other operating system you must update it. This should be the first thing. If you are a bit security aware (read paranoid) you can first set up the firewall rules and then update the system to the latest release where you have all the […]
Reasonable amount of enabled modules on Apache HTTP
CentOS Ubuntu FreeBSD core_module (static) core_module (static) core_module (static) so_module (static) so_module (static) so_module (static) http_module (static) watchdog_module (static) http_module (static) access_compat_module (shared) http_module (static) mpm_prefork_module (shared) actions_module (shared) log_config_module (static) authn_file_module (shared) alias_module (shared) logio_module (static) authn_core_module (shared) allowmethods_module (shared) version_module (static) authz_host_module (shared) auth_basic_module (shared) unixd_module (static) authz_groupfile_module (shared) auth_digest_module (shared) access_compat_module (shared) […]
Linux VS open source UNIX
Linux is the mainstream UNIX-like platform of choice in the modern world. There are valid open source code base alternatives from which many businesses have benefited from. This is a different approach on both.